Staircase pattern in a superfluid He-II torsional-oscillator analog of the radio-frequency SQUID
Michele Bonaldi, Massimo Cerdonio, Rita Dolesi, Stefano Vitale
DOI 10.1103/PhysRevB.49.1528 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We are developing a superfluid He4 analog of the rf SQUID. A thin partition with a micrometric orifice is placed inside a toroidal container filled with liquid helium; ac and dc superflows through the orifice are induced by rotating the whole torus, which is the inertial member of a torsional oscillator. The torus oscillation amplitude vs drive curve shows a small but reproducible staircase pattern, which is detectable between 1.4 and 2.05 K, but is not modulated by a superimposed steady rotation. We discuss this behavior in terms of the occurrence of multiple phase slips.
Similar papers
Transition from phase slips to the Josephson effect in a superfluid 4He weak link
similarity 0.86E. Hoskinson et al. · 2005 · arXiv:cond-mat/0511720
Source status unknown — claims are unverified
Measurements of Phase Dynamics in Planar Josephson Junctions and SQUIDs
similarity 0.85D. Z. Haxell et al.
Source status unknown — claims are unverified
rf-SQUID-Mediated Coherent Tunable Coupling between a Superconducting Phase Qubit and a Lumped-Element Resonator
similarity 0.84M. S. Allman et al.
Source status unknown — claims are unverified
Superconducting tunable flux qubit with direct readout scheme
similarity 0.84Fabio Chiarello et al. · 2005 · arXiv:cond-mat/0506663
Source status unknown — claims are unverified
Ground-state characterization of Nb charge-phase Josephson qubits
similarity 0.83H. Zangerle et al.
Source status unknown — claims are unverified
Tunable kinematics of phase-slip lines in a superconducting stripe with magnetic dots
similarity 0.83G. R. Berdiyorov et al.
Source status unknown — claims are unverified